Question Is there a dive profile calculator app?

[EricUnderwater]

I would really like to see how the various algorithms and conservancy factors differ when in use, ideally by inputting theoretical dive profiles and selecting algorithms to compare.

Does this exist?

 

[justinthedeeps]

I find this interesting to explore in Subsurface

 

[Divin'Papaw]

V-Planner, MultiDeco and Baltic, all used primarily for planning technical dives, can be used for this type of comparison. They are all available on iOS and Android.

 

[inquis]

You mentioned various algorithms. Most planners use the Buhlmann ZHL-16C+GF algorithm because it's not proprietary and very configurable. A few have the VPM algorithm, though that's fallen out of favor. The Suunto RGBM algorithm (and related variants) are proprietary, so you'd have to use their planner, DM5 (though it's not easy to obtain). Some of the dive computers may have planning capability, but will be limited to square profiles.

 

[inquis]

V-Planner, MultiDeco and Baltic, all used primarily for planning technical dives, can be used for this type of comparison. They are all available on iOS and Android.

MultiDeco is a newer product from the same company as V-Planner, so not much use for the latter. Baltic is not available for Android.

 

[noprowiththebow]

You can always used the PADI eRDP? wink wink! Ha!

 

[grantmac]

DecoBuddy | Free and personalized dive planner. if online
Subsurface for offline.

 

[lizardland]

I would really like to see how the various algorithms and conservancy factors differ when in use, ideally by inputting theoretical dive profiles and selecting algorithms to compare.

Does this exist?

I highly recommend doing it yourself. I was interested in the same question a few years back so spent some time researching whatever algorithms I could find. I knew nothing about programming and taught myself enough C to be able to write some code to test it all out. It really is the best way to understand how a Haldanean deco model works.

For Buhlmann all the info you needs is out there on the internet. You'll definitely find enough info to do vanilla ZHL16 and to add gradient factors in. Bubble models are a lot more complicated. The VPM model is definitely available. Bruce Wienke used to sell a series of papers that explained the RGBM model. But that was before the deal with Suunto so I don't know if that's still the case. Bubble models fell out of favour for a variety of reasons amongst technical divers so I've never bothered pursuing it although I've got the full set of Wienke's papers somewhere. There's probably enough info floating around to recreate a whole variety of other lesser known algorithms too.

You could easily learn enough Javascript to build something that runs in a browser in a couple of days if you have no coding experience. Writing the code to run ZHL16 probably isn't even a day's work, the complexity comes from adding user interfaces and features.

It really is the best way to understand what is going on with any deco algorithm.

 

[Subcooled]

I would really like to see how the various algorithms and conservancy factors differ when in use, ideally by inputting theoretical dive profiles and selecting algorithms to compare.

Does this exist?

Subsurface will show you the tissue loading graph.

Slow vs fast tissues behave differently and thus, you might need different mandatory decompression schedules for various times at various depths.